docs: def ReadVarString(self, max=sys.maxsize):
          """
          Similar to `ReadString` but expects a variable length indicator instead of the fixed 1 byte indicator.
  
          Args:
              max (int): (Optional) maximum number of bytes to read.
  
          Returns:
              bytes:
          """
          length = self.ReadVarInt(max)
          return self.unpack(str(length) + 's', length)